Light-operated non-beating split type solar water heater

Abstract

The invention mainly discloses a non-pressure bearing split type light control solar water heater which mainly comprises a heat collector and a light control integrator. A water tank and the heat collector are arranged in a split manner, and the whole system is controlled by the light control integrator. The water tank is a non-pressure bearing insulation water tank, the heat collector consists of a plurality of vacuum tubes which are transversely arranged, and the position of the heat collector is higher than that of the water tank. The solar water heater is composed of the heat collector, the light control integrator, a light sensor, a main aqueduct and a branch aqueduct, a water returning device, a circulating pump, a solenoid valve, the water tank and the like parts, which can achieve integration of the solar water heater and the building, the independent installation and greatly improved forced circulating heat efficiency; the main aqueduct and the branch aqueduct can cause the heat collector to realize thorough exchange between the cold water and the hot water, the light control integrator can cause the whole system to operate automatically and aperiodically, which greatly improves the work efficiency of the system; the water returning device can cause the hot water in the vacuum tubes to return to the water tank for use, prevent frost crack of the vacuum tubes of the heat collector under the conditions of low light intensity, low temperature or ultra-low temperature, and greatly relieve the thermal efficiency reduction caused by scale deposit generated in the vacuum tubes.

Description

technical field [0001] The invention relates to a solar water heater, in particular to a non-supporting solar water heater whose operation is controlled by a light control integrator and the heat collector is installed separately above the water tank. Background technique [0002] As a clean and pollution-free green environmental protection device, solar water heaters are becoming more and more popular. At present, most of the popular solar water heaters on the market are desktop or pressure-bearing wall-mounted. The main form of the desktop is that the water tank is connected with the vacuum tube; the pressure-bearing wall-mounted type is composed of the water tank and the collector, but the vacuum tube of the collector and the water tank are connected together through a closed metal tube. The working principle of the desktop is: the vacuum glass tube is irradiated by sunlight, the water in the tube is heated and buoyant, and exchanges heat with the water in the heat prese...

AI Technical Summary

Problems solved by technology

[0003] First, the vacuum glass tube is integrated with the heat preservation water tank, which occupies a large space, and the workload of the water heater is also large after entering the water, so there are great limitations in the placement location, resulting in the fact that only residents on the top floor can install it. Using solar water heaters, other users can't install or use them if they want to install them

[0004] Second, due to the limitation of daylighting and bulky installation of desktop solar water heaters, the installation of solar water heaters often affects the beauty and integration of urban buildings. At the same time, the safety brought by the installation of non-top users , water leakage and other social problems have led to restrictions on solar water heaters by local property management departments and relevant government departments

[0005] Third, the heat exchange of water in the vacuum glass tube is a natural exchange in a single body tube. When the temperature is not high, the speed of this heat exchange transfer is very slow, and the heat exchange efficiency is very low.

[0007] Fifth, the solar water heater is placed outdoors, and the heat dissipation of the water tank is large. Under low temperature and low light in winter (such as at night), the water in the vacuum tube is easy to freeze, thus cracking the vacuum tube

[0008] Sixth, there is water retention in the vacuum glass tube for a long time, and it is a natural exchange, so the residues in the water are very easy to precipitate, and there will be a lot of sediment and scale over time, and these sediments or scale will be removed unless the vacuum tube is disassembled Down to complete, which largely hinders the absorption of solar energy

From the point of view of the structure and heat conduction method, there is a big problem in this kind of solar water heater: since it needs to add a metal tube with closed circulation, and the water tank needs to be pressure-bearing, the material cost of the water heater will be increased by at least 3-5 times. The retail price to consumers will increase accordingly

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